Given:
• Number of yellow marbles = 9
,
• Number of blue marbles = 4
,
• Number of green marbles = 3
,
• Number of red marbles = 5
,
• Number of purple marbles = 7
A marble is chosen at random, not replaced, then another marble is chosen. Find the P(red, then yellow).
Probability that the first marble picked is red:
Where:
total number of marbles = 9 + 4 + 3 + 5 + 7 = 28
Number of red = 5
Hence, we have:
Now, for the next marble to be a yellow marble given that the red marble was not replaced, we have:
Hence, for P(red, then yellow), the probability will be:
ANSWER: